Shuttle-operating mechanism for embroidering-machines.



K. EGGART;

SHUTTLE OPERATING MECHANISM FOR EMBROIDERING MACHINES.

APPLICATION FILED AUG. 1, I914.

Patented Oct. 3, 1916.

3 SHEETS-SHEET l.

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K. EGGART.

SHUTTLE OPERATING MECHANISM FOR EMBROIDERING MACHINES.

APPLICATION man AUG. l. I914.

1,200,177. Patentd Oct. 3,1916.

3 SHEETSSHEET 2.

my? M w w K. EGGART. SHUTTLE OPERATING MECHANISM FOR EMBROIDERING MACHINES. APPLICATION FILED we. 1. I915 Patented Oct. 3,1916.

3 SHEETS-SHEET 3.

10 hereof.-

y 2 5i of connections from i onjejl cam oing fiemxnorn al KARL EGGA RT, OF ARBON, SWITZERLAND;-ASSIGl\TOR-T ADOLPH SAURER, OF ARBON, SW'ITZEBLAND.

SHUTTLE-OPERATING MECHANISM F03 E'MBRomERmG-MAcHINEs.

I Patented Oct. 3, 1916.

Application filed August 1, 1914;; Serial No. 854,447.

To all whom it may concern:

Be it known that I, KARL EGGART,- a subject of the Emperor of'Germany, residing 1 in Arbon, Switzerland, have invented cers' tain new and'usefnl Improvements in Shuttle-Operating Mechanisms for Embroidering-Machines,- of which the followingis a specification, reference being hadt'o the ac compz'tnying drawings, forming a part This invention relates to means for operating or producing the required movement ofthe shuttles in shuttle embroidering machines and more especially in shuttle embroidering machinesinavhich the operations ofthe embroiderlng mechanismare 1n1tiated' or controlled by a jacquard mechanism or automat, and it has for its object the production of means whereby thethrow of'the shuttles can he lengthened or shortened through the. action of devices "intermediate" the'op cratingcalns or other 'opera't'in'g mech anli'sni" and the: 'shiittleihars or transmitting gizthe shiftin setof caiifs levees stem withdiit req" titchiiigf and y'i'ce yer's the embed invention illust tefd -in the: drawings .th action ofthe' automate-under: the tamer the jacqnard carchtinit'iates on hrings'l 'ahou 2' the shifting {or action-:5 'oftthe intermediate. devices I referred to'," whereby the eiiectiivei' length of the f operating leveraanm isdengthened-or shortened for-'"the purpo'sefrof length '1 by-a loclfin'gibolt 21 soithat the sliding bolt Th e Linventioniwi plai i'ied 'i hereinafter fwithf' treferience ttocif accoinpanying, dra'wingszin )jVlliCli. on'e erni I H v at iit's maximum; orvinsthe; position .shownin ,2

Figs.- 511and6, inzwhich thestnd's 18"-are.atrv1QQ g the innen-enolsi of thexslots j19 fandztheir r ar: r an'd partlyi in sectional";elevation ashowingia dial distance fromitheaxi s 6; andthereforel; the improved mechanism; and sonnuchiofza j acqna'rd mechanism or automate and; ofan 7 501 embroidering: mac'hinewas isifn'fecessary .tYo elf-is bodimen't thereof is ilhi'strated Figure 1111 s ielev-at o whr - what larger scale than Figs. 1 and 2, showing the improved mechanism with parts in di erent positions. Fig. 7 1s a detail View in section through the main operating lever. F ig. 8 is a detail View partly in section on the irregular plane indicated by the lineA'B of Fig. 8. Fig. 9 is a detail View of the lockinglever.

In the drawings thc'frame of an automatic embroidering machine of ordinary 4 which act respectively upon the two rollers 7 of the bell-crank or main operating lever 5, mounted at 6 on the frame ofthe machine. The bell-crank or main operating'lever 5 operates or efiects the required 1 movement of the shuttle rails, one of which uttles be Varied; prcvisi on ismiade for'mzrylength' of th nearly "yeitti-ir ii rm 14-0 the bell crank' In order that the throw t the sh 1 41': The s'lidingsholt; preferably cylin- L; 5%.

- one-20f? itsv two :operativei 1 .3; 4 find/i7 57in; which the :efiiecti.vef lengtli 'ofi th e lever 'arm,'l that is; thei'lradialze distance'fofi' the: studs: ISvtr'om the: axis :6, is; L

the eiiective length: of? the slever.:.arm,.i.is';the z2- minimum; @Theilocking;bolt? 21 s mounted i in av guide 220 and r is normally pressed i for- .21Q5 2,: w'ardgrintoip locking ..position',-js,b'y; a spiral; spring 22.; pini23g carried by. the .heads of, the-docking; .looltQ; proj ectsgathrough slots-un theawall of: thetignidefilQein front: of the bolt;

operating, l 25,; .pivotally mounted-1 on 1 "in the position shown: in; 195,

the main operating lever 5, one of such arms having connected thereto a spring 24 which normally withdraws the bolt operating arms, while the other carries a roller 26 which coperates with the concentrically curved edge of the long arm 29 of a lever which is pivotally mounted at 27 on the lower and nearly horizontal arm of the main operating lever 5. The shorter arm 28 of this lever is provided with a roller 28 for a purpose to be described. The curved edge of the arm 29, which cooperates with the roller 26 of the bolt operating arm 25, is provided with two rounded notches 31 and 32. Movement of the lever arm 29 from either one of its alternative positions, such as that shown in Figs. 1, 3 and 4, or that shown in Figs. 5 and 6, acts upon the roller 26 to move it out of the corresponding notch and therefore, through the arms 25, to withdraw the bolt 21. from the corresponding notch 16 or 17 of the sliding bolt 15, thereby permitting relative movement of the sliding bolt 15 and "the arm of the bell-crank 5 in which it is mounted. Such relative movement takes place while the roller 26 is resting upon the curved edge of the arm 29 between the two notches 31 and 32 and as soon as one or the other of such notches registers with the roller 26, the spring 24 swings the arms 25 backward and the spring 22 throws.

the locking bolt forward into engagement with the locking groove 16 or 17, as the case may be, of the'sliding bolt 15, thereby locking the sliding bolt 15 in one position or theother.

The roller 28 on the short arm 28 of the locking lever 28 29 enters a long slot 33 34 in a lever 35 which is pivoted at 37 on the support 36 and is pulled normally toward the position shown in Figs. 4 and 5, then the roller 28 is free to move only in the portion or wing 34 of the slot. It will be observed that the shifting of the lever 35 can take place only when the roller 28 is in its middle position with respect to the two ends of the slot 33 34, as indicated in Figs. 4, 5-

and 6. Since the lever arm 35 is mounted on the support 36 and the lockmg lever28 29 is mounted on the main operating lever or hen the lever 35 is the roller 28 is resting against the shoulder 34, as shown in Fig. 4, or against the shoulder 33, as shown in Fig. 6.

The angular position of the lever arm 35 determines whether the shoulder 33 or the shoulder 34 shall be in position to hold the roller 28 against movement in one direction or the other and therefore whether the relative movement of the locking lever 28 29 with respect to the bell-crank lever 5 shall be in one direction or the other. The angular position of this controlling lever 35 is therefore placed under the control of the automat or jacquard mechanism. For this purpose the short shaft 37 on which the lever 35 is mounted is provided with a short arm 38 which carries a roller 39. The latter, under the influence of the spring 35, bears against the edge of a stop cam 40, the upper part 41 of which serves to hold the lever 35 in the position shown in Figs. 1, 3 and 6, while the low part 42 serves to permit the lever 35 to be swung by the spring 35 into the position shown in Figs. 4 and 5. The stop cam 40 is directly under the control of and is moved by the autonrat or jacquard mechanism through suitable devices, such as the link 43, the lever 45 mounted on the support 44, and the link 46 connectedto a crank pin 47 on a shaft 49 of the jacquard mechanism 48, a pinion 5O splined on the shaft 49, being shifted by the needle mechanism 51 into or out of engagement with the rotating gear 52 of the jacquard mechanism. A half rotation. of the shaft 49, from the position indicated in Fig. 1 causes the stop cam 40 to be moved from the posi tion shown in Figs. 1 and 3 to the position shown in Fig. 4 and therefore permits the slotted controlling lever 35 to be moved the spring 35 from the position shown in Figs. 1 and 3 into the position shown in Figs. 4 and 5. Another half rotation of the shaft 49 will. cause the stop cam 40 to be moved from the position shown in Figs. 4 1

and 5 to the position shown in Figs. 1, 3 and 6, thereby moving the controlling lever 35 from the position shown in Figs. 4 and 5 to the position shown in Fig; 6.

The slotted bolt 15 is preferably moved 4.

with respect to the arm of'the lever 5 in which it is mounted through a connection with the locking and shifting lever 28 As shown particularly in Fig. 8 a link 55 mounted at one end on a stud 56 which may 5..

project fromthe sliding bolt 15 through the slot on the corresponding side of the lever arm may have at itsother end a stud 54 which enters a slot 53 in the lever-arm 29. The slot is slightly elongated, as shown, so as to permit a suiiicient movement of the locking lever to withdraw the locking bolt 21 before the movement of the'sliding bolt begins, the continued movement of the looking and shifting lever, after the locking bolt has been Withdrawn, producing a corre-.

sp'ondin'g movement of the sliding bolt with relation to the bell-crank lever. This action is the same whether the sliding bolt is moved in one direction or the other.

In describing the operation of the mechanism shown in the drawings let it be assumed that with the parts in the positions shown in Figs. 1 and 3, when the shuttles have their full throw, the studs 18 being in the outer end of the slots 19, it is desired to shorten the throw of the shuttles. To accomplish this the point of connection between the corresponding arm of the bell-crank lever 5 must be shifted from the point shown in Fig. 1 to a point nearer the axis of oscillation of the lever 5. It will be seen, upon examination of Fig. 3,.for example, that the portions 33 and 34 of the slot 33 34 in the lever 35 are curved substantially concentric with the axis 6 of the bell-crank lever 5, and it will be understood that'with the parts in the relative positions shown in Fig. 3, as the bell-crank lever 5 is oscillated by the cams 3 and 1, the roller 28 reciprocates in the part 33 of the slot 33 34 and also that when the parts are in the positions shown in Fig. 5 the roller 28 recipro'cates in. the portion 3 of the slot 33 34. With the parts in the positions shown in Fig. 3 and the roller 28 reciprocating in the portion 33 of the slot, at the moment when the roller is at or near the top of the part 33 of the slot, as shown in Fig. 6, the jacquard mechanism or automa't causes the stop cam 40 to be moived so asjto permit the slotted controlling lever 35 to be moved from the position shown in Fig. 3 to the position shown in Fig. 4:. At this instant the bell-crank lever 5 is at the extreme of its oscillation toward the right, as also shown in Fig. 1, and then at once begins its oscillation toward the left. During the oscillation of the bell-crank lever toward the left the roller 28' rests upon the shoulder 34 and the consequence of the oscillation of the bell-crank lever toward the left is therefore, as shown in Fig. 5, to produce a relative movement of the locking lever 28 29 with respect to the bell-crank lever, from the position shown in Fig. t to the position shown in Fig. 5, This movement, through the co-action of'the curved edge of the lever arm 29 and the roller 26, withdraws the looking bolt 21 and releases the sliding bolt 15.

7 Through the provision of the slot 53 in the locking lever 28 29 the first effect of the relative movement of the locking lever is to cause the locking bolt 21 to be withdrawn,

but as soon as'that function is accomplished the continued relative movement of the locking lever, which now becomes also a shifting lever, causes the sliding bolt 15 to be drawn from the position shown in Fig. 4 to the position shown in Fig. 5. As'soon as this relative position has been acquired, the --notch 32 in the curved edge of the lever arm- 29 permits the locking bolt 21 to move forward underthe influence of the spring 22 and en ter the locking groove 17 in the sliding bolt 15, which groove is then in line with the loeking bolt 21. The lockin lever then continues to oscillate as before, but as the effec-- tive length of its working arm has been reduced the throw of the shuttles will be re- --duced correspondingly.

When the throw of the shuttles is to be increased from the short throw to the normal, long throw, the jacquard mechanism or automat, through another half rotation of the shaft 49, at the instant when the cams are in positions shown in Fig. 5, causes a movement of the stop cam 40 from the position shown in Fig. 5 to the position shown in Fig. 6. The bell-crank lever 5 is then at the left hand limit of its oscillation. During the following oscillation to the right the roller 28 bears against the shoulder 33, as shown in Fig. 6, and the lever 28 29 remains relatively stationary. The bell-crank lever 5 therefore moves relatively to the locking lever 28 29 and, as will now be clearly understood, the locking bolt 21 is withdrawn, held out of locking position and then per mitted to move again into locking position. While it is so held out of locking position, during the remainder of the forward or right handos'cill'ati on of the bell-crank lever, the said bell-crank lever moves with respect to the sliding bolt 15 which, as already described, is connected by the link 55 and the loeking'andshifting lever 28 29 and the sliding bolt therefore reassumes, with relation to the bell-crank lever, the position shown in Fig. 7, in which relative position it is locked by the engagement of the locking bolt 21 with the locking groove 16 of the sliding bolt. Thereafter, therefore, the oscillations will be'actua'ted by the 'bell-cra'nklever with a full, normal throw.

It will be understood that various changes 3 3 1 in details of construction and arrangement may be-made tosuit different conditions of use and that the invention, therefore, is not limited to the particular construction "shown and'de'scribed herein.

Iclaim as my -invention:' I '1. In an'embroidering machine, the combination of a shuttle-bar, a main operating lever having an operating arm, operating connections between the'operatinglever and 3. In an embroidering machine, the com-- bination of a. shuttle-bar, a main operating lever havin an oaeratin arm 0 eratin connections between the operating lever and the shuttlebar, mechanism for actuating the main operating lever, means actuated by said last named mechanism for shifting the point of connection between said operating connections and the operating arm of the main operating lever, an automat, and means, the operation of which is initiated by the automat, for controlling said shifting means.

4, In an embroidering machine, the combination of a shuttle-bar, a main operating lever, operating connections between the operating lever and the shuttle-bar, said operating connections including a shiftable connection on the operating lever, mechanism for actuating the main operating le ver, means operated by said actuating mechanism for shifting said shiftable connection, and independent pattern controlled devices for controlling the operation of said shifting means.

5. In an embroidering machine, the combination of a shuttlebar, a main operating lever, operating connections between the operating lever and the shuttle-bar, said operating connections includinga shiftable connection on the operating lever, mechanism for actuating the main operating lever, a shifting lever mounted on the main operating lever and connected to said shiftable connection, and means to control said shifting lever. V

6. In an embroidering machine, the combination of a shuttle-bar, a main operating lever, operating connections between the operating lever and the shuttle-bar, said operating connections including a shiftable connection on the operating lever, mechanism for actuating the. main operating lever, a locking device for said shiftable connection, a locking and shifting lever mounted on the main operating lever, said shifting lever being operatively connected with said shiftable connection and in operative relation with said locking device, and means to control said shifting and locking lever.

7. In an embroidering machine, the com.- bination of a shuttle-bar, a main operating lever, operating connections between the operating lever and the shuttle-bar, said operating connections including a shit-table connection on the operating lever, mecha- \nism for actuating the main operating lever,

'operating with said shifting lever, and

means to control said controlling lever.

8. In an embroidering machine, the combination of a shuttle-bar, a main operating lever, operating connections between the operating lever and the shuttle-bar, said operating connections including a shiftable connection on the operating lever, mechanism for actuating the main operating lever, a shifting lever mounted on the main operating lever and operatively connected to said shiftable connection, a controlling lever in operative relation with said shifting lever, an automat, and means actuated by the automat for controlling said controlling lever. j r

9. In an embroidering machine, the combination of a shuttle-bar, a main operating lever," operating connections between the operating lever and the shuttle-bar, said operating connections including a shiftable connection on the operating lever, mechanism for actuating the main operating lever, a shifting lever mounted on the main oper- 'ating lever and operatively connected to said shiftable connection, a spring pressed controlling lever in operative relation with said shifting lever, a stop cam in operative rela tion with said controlling lever, an automat, and operating connections from said automat to said stop cam.

' 10. In an embroidering machine, the combination of a shuttle-bar, a main operating lever having an operating arm, a sliding bolt mounted on the operating arm of said main operating lever, operating connections between said sliding bolt and the shuttlebar, a shifting lever mounted on the main operating lever and operatively connected to said sliding bolt, and means to control said shifting lever.

11. In an embroidering machine, the combination of a shuttle-bar, a main operating lever having an operating arm, a sliding bolt mounted on the operating arm of said main operating lever, operating connections between said sliding bolt and the shuttle-bar, a locking device for said sliding bolt, a shifting and locking lever mounted on the main operating lever and operatively connected to said sliding bolt and in operative relation with said locking device, and means to con trol said shifting and locking lever.

12. In an embroidering machine, the combination of a shuttle-bar, a main operating lever having an operating arm, a sliding bolt mounted on the operating arm of said main operating lever, operating connections between said sliding bolt and the shuttlebar, a spring pressed locking bolt adapted to engage said sliding bolt, a shifting and locking lever mounted on the main operating lever and operatively connected to said sliding bolt, and having a concentrically curved and notched edge for cooperation with the locking bolt, and means to control said shifting and locking lever.

13. In an embroidering machine, the combination of a shuttle-bar, a main operating lever having an operating arm, a sliding bolt mounted on the operating arm of said main operating lever, operating connections between said sliding bolt and the shuttlebar, a locking device for said sliding bolt,

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

a shifting and locking lever mounted on the main operating lever in operative relation with said locking device and having a concentric slot, a link connection between said sliding bolt and said shifting and locking lever in said concentric slot, and means to control said shifting and locking lever.

This specification signed and witnessed this 20 day of July, A. D. 1914.

KARL EGGART. Signed in the presence of- G. NICHOLAS IFFT, R. H. WILLIAMS.

Washington, D. G. 

